现有A、B、C、D、E、F六种常见物质,其转化关系如下图所示(部分反应条件和产物已略去).已知A、B、C三

2025-04-07 07:32:33
推荐回答(1个)
回答1:

A、B、C三种单质分别为固体、黄绿色气体、无色气体,则B是Cl2,A是固体,A和氯气反应生成D,D的溶液呈黄色,则D是FeCl3,所以A是Fe,C是无色气体,B和C反应生成E,E溶液显酸性,E能和Fe反应生成C和F,F能和Cl2反应生成FeCl3,则C是H2,E是HCl,F是FeCl2
(1)通过以上分析知,B是Cl2,故答案为:Cl2
(2)反应③为HCl和Fe的反应,二者反应生成FeCl2和H2,反应方程式为2HCl+Fe=FeCl2+H2↑,故答案为:2HCl+Fe=FeCl2+H2↑;
(3)反应④为FeCl2和Cl2的反应生成FeCl3,离子反应方程式为2Fe2++Cl2=2Cl-+2Fe3+,故答案为:2Fe2++Cl2=2Cl-+2Fe3+

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